Start » Cross Domain Solutions » Data Diode DD1G

Advenica Data Diode DD1G

Gigabit one-way data flow

The second generation Advenica Data Diode DD1G
provides physically enforced one-way data flow for
Ethernet Layer 2. A hardware only, robust cybersecurity
solution for protecting the most valuable digital

The core of robust cybersecurity solutions

Engineered for enforced unidirectional data flow, data diode solutions serve as an impenetrable barrier against cyber threats. Ensuring that data can transfer securely between intended networks without the risk of external attacks or unauthorised access.

The DD1G is an Ethernet-based data diode with Gigabit performance. At the centre, a purpose-built optical fibre connection secures the separation of the two connected networks.

The Advenica DD1G series are pure hardware data diodes with no configuration options. As a result, the risk of having an unintentional faulty configuration or outdated software exposing vunerabilites is fully mitigated.

Data diodes for Ethernet Layer 2

The DD1G series works on Ethernet Layer 2. All network data on the upstream network will be automatically transferred to the downstream network, regardless of overlaying network protocol.

The data diode requires unidirectional network protocols, such as UDP, to function correctly in a system. If an application requires any other protocol support, the interfacing systems must act as proxy services and convert these protocols into a unidirectional flow.

Extended functionality with proxy services

For use cases requiring bidirectional communication, the DD1G series can be combined with the Advenica Data Diode Engine, a standalone proxy software solution that manages data transfer through Ethernet-based diodes.

The Data Diode Engine is optimised for efficient and secure data transfer and supports a range of application specific software services for use cases such as file transfer or sensor data export.


Key features

  • Guaranteed one-way data flow based on optical fiber.
  • Pure hardware device, no risk of misconfiguration.
  • Combine with Advenica Data Diode Engine for versatile and scalable data diode solutions.
  • Flexible installation with three-way mounting options (standalone, rack mounted, DIN-rail).



Technical brief

  • 1Gbps interfaces
  • Ethernet Layer 2
  • Native support for unidirectional protocols
  • PoE-enabled power supply (Power over Ethernet)
  • Tamper-evident casing


Technical data

Applications and protocols supported

  • Log export (e.g. Syslog over UDP)
  • AIS (Automatic Identification System) over UDP
  • Media streaming (RTP)
  • CCTV monitoring



Network interfaces

Gbit Ethernet



Network data (Upstream + Downstream)

2x Gbit Ethernet (RJ45)


Physical characteristics


  • Standalone
  • Rack-mounted (1U in 19’’)
  • DIN-rail


  • Tamper evident casing

Device Size

  • 100x32x138 (WxHxD)

Device Weight

  • 0.5 kg


Electrical characteristics

Input voltage

  • 1x or 2x 24VDC (Redundant power inlets)

Power consumption

  • 6W

Power supply options

  • 1x 100-240VAC / 24VDC (Power supply rating 18W), included
  • 1x or 2x 24VDC 6W (Terminal screw plint), included
  • Power over Ethernet (PoE)


Environmental characteristics


-20° – +60°C, 5% – 95% RH non-condensing IEC 60721-3-1 (1K3/1B1/1C2/1S2/1M2)


-20°- +60°C, 5% – 95% RH non-condensing IEC 60721-3-2 (2K2/2B1/2C1/2S1/2M2)

Stationary use

0° – +50°C, 20% – 90% RH non-condensing IEC 60721-3-3 (3K3/3Z1/3B1/3C1/3S1/3M2)


Supported standards



Network data ports

IEEE 802.3ab,1000Base-T

Some security challenges where datadiodes are a good solution

Traceability and security logging

Centralised logging in security-sensitive systems involves an enhanced risk of attacks. To reduce the risks, a solution is needed that protects both log data and all connected systems. Read more about traceability and security logging.

Secure transfer of SCADA information

To transmit critical information, e.g. from a SCADA system to an administrative office network means potential security risks. But there are solutions that take care of security problems and at the same time enables an exchange of information. Read more about secure transfer of SCADA information.

Secure updates

Updates for Windows and Linux systems are an important part of maintaining the security of the digital information in these systems. However, the updates themselves may be a security risk – to avoid these risks and to maintain the integrity and availability of the systems and be able to make secure updates, special solutions are required. Read more about secure updates.

Certifications and approvals

Advenica solutions have been awarded several prestigious approvals by the European Union, national certification bodies and international IT security certification bodies. We also hold US patent for our VPN technology, Three Domain Separation.


Advenica warrants that this product will be free from defects in material and workmanship for one (1) year from the date of purchase.